Physical And Chemical Properties Investigation Of Novel Gemini Surfactant Derived From Cyanuric Chloride

Gemini surfactant is amphiphilic molecules of receiving widespread attention byresearchers that has wide application prospects in many fields, the critical micelleconcentration (CMC) and the dynamic surface tension (DST) are two important parameters ofthe superior performance of surfactant, thus further study of its thermodynamic and kineticproperties is particularly important.In this paper, the DST curves of ten kinds of novel Gemini surfactants were measuredby the maximum bubble pressure method(MBP) at 303.15K, at four concentration (5.64mmol/L, 8.46mmol/L, 11.28mmol/L, 16.92mmol/L), and the dynamic adsorption mechanism werestudied. The results show that the rate of thatγ(t) down fromγ0of the higher concentration isgreater; the adsorption process is controlled by diffusion at the start, the adsorption process ofthe mid is hybrid control adsorption and the adsorption process of the late is controlled bysimulant diffusion.Conductivities of the two X-type Gemini surfactants were measured at threetemperatures (298.15K, 303.15K and 308.15K), and at three ratios (5%, 10% and 15%) (V/V)of four organic solvents (methanol, ethanol, ethylene glycol and 1,4-dioxane)/water, and theirrespective critical micelle concentration and degree of micelle ionizationαwere obtained. Thevarious thermodynamic parameters (?) were calculatedby the CMC, and the physical meaning of these parameters and variation were studied. Theresults show that the micelle formation of these surfactants in their systems are driven byentropy, the formation of micelle is more difficult due to the organic solvent addition and thecorresponding CMC is greatly improved, and the impact sequence is 1,4-dioxane > methanol> ethylene glycol > ethanol.